Actors Melissa Leo, Zachary Quinto and Tom Wilkinson are in talks to star in upcoming biopic of National Security Agency leaker Edward Snowden.

The computer professional leaked classified information from the NSA to the mainstream media, starting in June 2013. The film, which is directed by Oliver Stone, already stars Joseph Gordon-Levitt and Shailene Woodley, reported TheWrap.

Leo, Quinto and Wilkinson might play Laura Poitras, Glenn Greenwald and Ewen MacAskill respectively in ‘The Snowden Files’. Poitras is the director of Oscar-nominated Snowden documentary ‘Citizenfour’, which was also a part of the whistleblower’s revelations.

Greenwald is a lawyer/journalist, who was chosen by Snowden to leak information to. MacAskill is a contributor at The Guardian who helped break Snowden’s stories about mass surveillance.

Gordon-Levitt will play the whistleblower and Woodley will be seen as his girlfriend in the movie, which is based on books ‘Time of the Octopus’ by Snowden’s lawyer in Russia, Anatoly Kucherena, and ‘The Snowden Files: The Inside Story of the World’s Most Wanted Man’ by Guardian journalist Luke Harding.

Scott Eastwood has also joined the movie. He will play a National Security Agency agent.